Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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Before
AfterSupply Duct Cleaning in Leesburg, VA
Supply duct cleaning in Leesburg targets the ductwork that actually moves conditioned air from your HVAC system into your living spaces – the runs that terminate at the registers you see on your walls, floors, and ceilings. A thorough supply duct cleaning removes the accumulated dust, debris, and biological growth inside those runs, restores proper airflow to every room, and gives you a documented photo record of exactly what was found and removed. CleanRun Duct Repair & Cleaning has been doing this work since 2013, with a written price before any panel comes off and photographs of every duct run included as a standard deliverable – not an add-on.
If you have questions about what’s inside your supply ducts or what a cleaning actually costs, call us at (571) 487-7204. A live person picks up, and we’ll put a written number in front of you before anything else happens.
Supply duct cleaning is one part of a complete system – for context on how it fits into the broader scope of work, our Air Duct Cleaning in Leesburg page explains the full picture, including return duct cleaning, plenum inspection, and air handler cleaning.
What Supply Ducts Actually Are (and Why They Get Dirty)
The supply side of your duct system is the pressure side. Your air handler pulls air in through the return ducts, conditions it, and then pushes it outward through the supply plenum – a large distribution box – into individual duct runs that branch off toward each room. Those runs end at supply registers: the vents you open or close to control airflow in a given space.
Because the supply side is always under positive pressure, it pushes air through any small gap or joint. In Leesburg’s older subdivisions – areas like Tuscarora Village, Potomac Crossing, and the neighborhoods off Ball’s Bluff Road – homes built between 1988 and 2005 often have flexible duct (called flex duct) connecting rigid metal trunk lines to individual registers. Flex duct accumulates debris in its inner liner’s corrugated ridges in a way that sheet metal does not, and those ridges hold dust even when airflow is strong. Add Loudoun County’s seasonal humidity swings, which pull mold-friendly moisture into any duct penetration that isn’t sealed correctly, and you have conditions that make supply duct cleaning more than routine maintenance.
Over 52,000 homes served since 2013 – every one with a written price and a photo record – we’ve pulled camera footage from Leesburg supply runs that showed debris build-up beginning within six feet of the plenum takeoff. That’s the elbow right behind the register you walk past every day.
When You Need Supply Duct Cleaning
- Uneven room temperatures that don’t match the thermostat setting. When debris or collapsed flex duct partially blocks a supply run, one room gets 60% of its designed airflow while another gets 100%. In Leesburg homes with two-story open floor plans – common in the Lansdowne on the Potomac area – this shows up as a second floor that never fully cools in July, even with the system running constantly.
- A visible dust ring around supply registers. Dust rings form when airborne particles in the duct stream hit the register face and deposit on the surrounding wall or ceiling. If you can see a ring, the duct carrying that air has been moving debris for long enough that it’s coating surfaces you can see. What’s inside the run is typically worse.
- A musty or stale smell that appears only when the HVAC runs. Odors that arrive exactly when the fan kicks on are almost always originating inside the ductwork itself – either microbial growth on the duct liner or debris that has been sitting long enough to off-gas. Leesburg’s spring and fall humidity peaks, particularly around the Potomac lowlands, accelerate this.
- Recent renovation work anywhere in the house. Drywall dust is fine enough to travel through return air gaps and deposit deep inside supply runs during construction. A kitchen or bathroom renovation in a Leesburg home almost always sends debris into the duct system unless the supply registers were taped off – and most contractors don’t do that.
- The system has never been cleaned since the home was built or purchased. Most Leesburg homes built before 2010 have never had a documented duct cleaning. NADCA guidelines recommend cleaning every three to five years under normal conditions; a home that hasn’t been cleaned in fifteen years has accumulated a measurable debris load in the supply runs, regardless of how clean the house itself looks.
- Allergy or asthma symptoms that correlate with being indoors. This isn’t a diagnostic claim – a doctor makes that call. But if symptoms improve when you leave home and worsen when the system runs, the supply ductwork is a logical place to look. The camera tells the story before any treatment is discussed.
Before
AfterOur Supply Duct Cleaning Process
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Written Scope and Price Before Anything Opens
Haven Standard Clause 1 means a written price is in your hands before a single register comes off the wall. We count the supply runs, document the duct type (sheet metal, flex, or duct board), note any access challenges specific to your Leesburg home’s layout, and give you a number. That number does not change unless you ask us to do something outside the original scope.
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Pre-Cleaning Camera Inspection of Every Supply Run
Before any cleaning equipment enters the system, we run a camera through each supply duct run and photograph what we find. Debris depth at the first elbow, liner condition in flex sections, joint separation, evidence of moisture – all of it is documented. You see the before photos before we do anything else. This is how we show you what’s actually there rather than tell you what we think you want to hear.
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Negative-Pressure Extraction Setup
Negative-pressure extraction means we connect a high-powered collection unit – typically Nikro or Abatement Technologies equipment, depending on the job configuration – to the supply plenum or a central access point. This creates a vacuum inside the supply duct system so that when we agitate debris loose, it travels toward the collection unit rather than back into the living space. Without negative pressure, a cleaning tool just moves debris around.
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Mechanical Agitation of Each Supply Run
With negative pressure established, we work each supply run individually using Rotobrush agitation equipment. The rotating brush breaks up the debris cake that forms in flex duct ridges and along sheet metal seams, while the collection system pulls it out. We work from the register end back toward the plenum, so debris travels in the direction of suction. Each run gets individual attention – we don’t clean one run and call the system done.
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Post-Cleaning Camera Verification and Photo Record
After every supply run is cleaned, the camera goes back in. Post-cleaning photographs of each run are taken from the same angles as the pre-cleaning shots. The before-and-after photo record is delivered to you as a standard part of the job – not uploaded to a portal you have to log into, but handed over as a concrete document. If a run doesn’t photograph clean, it gets cleaned again before we consider the job finished.
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Register Replacement and Final System Check
Registers are reinstalled, the system is powered back up, and we do a final airflow check at each supply register. If we find a run that’s producing noticeably lower airflow than expected after cleaning – which sometimes indicates a collapsed flex section or a disconnected joint rather than a debris problem – we flag it in writing and explain the repair option separately. That repair is a separate written price; it’s never bundled in without your knowledge.
Supply Duct Cleaning Pricing in Leesburg
Supply duct cleaning in Leesburg typically runs between $299 and $699 for a standard single-family home, depending on the number of supply runs, duct material, and system accessibility. That range reflects the actual Leesburg market as of 2025 – not a national average pulled from a study.
| Home Configuration | Typical Supply Run Count | Estimated Price Range |
|---|---|---|
| Townhouse or small single-family (under 1,800 sq ft) | 8-12 supply runs | $299 – $399 |
| Mid-size single-family (1,800 – 3,000 sq ft) | 13-20 supply runs | $399 – $549 |
| Larger home or two-zone system (3,000+ sq ft) | 21-30+ supply runs | $549 – $699 |
| Homes with significant flex duct or access challenges | Varies | Additional $50 – $150 |
What affects price in practice: the number of supply registers (counted on-site, not estimated over the phone), whether the system uses flex duct versus sheet metal (flex takes more agitation time per run), the location of the air handler (crawl space units in Leesburg’s older ranch-style homes on the north side of Route 7 are harder to access than attic or basement units), and whether the supply plenum requires a separate access cut to establish negative pressure.
What does not affect the price: how dirty the ducts are. We don’t charge more because the camera found more debris. The written price accounts for the work required to clean the system properly, and that price holds.
We do not offer $79 whole-system specials. That price point exists in this market, and it buys a shop-vac run at the registers with a photo of the vacuum hose. What it does not buy is negative-pressure extraction, per-run camera documentation, or a 365-Day Done Right Promise in writing. If you have a written estimate from another company, we’ll put our own number next to it – in writing, at no cost. Bring it to the call.
Call (571) 487-7204 for your written estimate. There is no “call for a quote” step that leads to a vague range – you’ll get a specific number after we confirm your home’s details.
FAQs – Supply Duct Cleaning in Leesburg
How much does supply duct cleaning cost in Leesburg?
Supply duct cleaning in Leesburg costs between $299 and $699 for most single-family homes, based on the number of supply runs and duct type. Townhouses and smaller homes with 8 to 12 supply runs typically land in the $299-$399 range; larger homes with two-zone systems or significant flex ductwork run toward the $549-$699 range. CleanRun gives you a written price – a specific number, not a range – before any work begins. Call (571) 487-7204 and we’ll confirm your exact price after a brief conversation about your home’s layout.
Is supply duct cleaning different from return duct cleaning?
Yes – supply ducts carry conditioned air from the air handler out to each room, while return ducts carry room air back to the air handler to be reconditioned. They’re on opposite sides of the fan, which means they collect different types of debris and require different access points. Supply duct cleaning specifically addresses the runs that feed your registers – the vents you see on walls and floors. A complete air duct cleaning covers both sides; supply-only cleaning is appropriate when the return side was cleaned recently or when airflow problems are isolated to specific rooms. If you’re unsure which side needs attention, the pre-cleaning camera inspection answers that before you commit to anything.
How long does supply duct cleaning take in a typical Leesburg home?
Most Leesburg homes take between two and four hours for supply duct cleaning, depending on run count and access. A townhouse with 10 supply runs is typically done in two hours. A 3,500-square-foot home in Lansdowne on the Potomac with 24 supply runs and a crawl-space air handler runs closer to four hours. The pre-cleaning camera pass and the post-cleaning photo documentation are included in that time – they’re not extras that extend the job, they’re part of how we confirm the work was actually done.
Can supply duct cleaning fix uneven heating and cooling in my Leesburg home?
Supply duct cleaning can fix uneven airflow that’s caused by debris obstruction or collapsed flex duct sections – and in Leesburg homes built before 2005, that’s a common finding. If one room is consistently warmer or cooler than the rest of the house, a camera inspection of the supply run serving that room will show whether blockage is the cause. If it is, cleaning resolves it. If the post-cleaning airflow is still below spec, that points to a physical duct problem – a disconnected joint or a fully collapsed flex section – which we’ll document and quote as a separate repair. We don’t clean a duct and call an airflow problem solved if the camera says otherwise.
The 365-Day Done Right Promise
Every supply duct cleaning CleanRun performs in Leesburg is backed by the 365-Day Done Right Promise. If the work is not right – if a supply run wasn’t cleaned to the standard shown in the post-cleaning photos, if debris reappears in a location we documented as clean, if something wasn’t done the way we said it would be – we come back and make it right. That promise is in writing on every job, not a policy subject to manager approval.
This matters because duct cleaning is largely invisible work. Without before-and-after photos of every run and a written guarantee that gives you a year to hold us to the standard, there’s no way to verify what was actually done. That’s exactly why the photo record and the written promise exist – not as marketing language, but as the mechanism that makes accountability real.
Tomas Reyes has built CleanRun on the position that documentation is the product. The camera footage is what separates a cleaning from the performance of a cleaning. Every Leesburg homeowner who calls us gets both.
Why Leesburg Homeowners Choose CleanRun
There are several duct cleaning companies serving Loudoun County, and some of them do good work. What makes CleanRun the specific answer for a Leesburg homeowner who researches before calling is the combination of things that are put in writing before the job starts and verifiable after it ends.
- Written price before any work begins – Haven Standard Clause 1, on every job, without exception.
- Documented photo record of every supply run – before and after, delivered as a standard job deliverable, not available on request.
- Background-checked, uniformed technicians – identified by name before arrival, operating under the H.A.V.E.N. Standard (Haven Standard Clause 3: Verified Crews).
- Professional-grade equipment – Rotobrush agitation systems and Abatement Technologies collection units are what trade-standard cleaning looks like; customers can look up either brand independently before agreeing to the price.
- 365-Day Done Right Promise – a written guarantee on every job, not a stated policy.
- Free second opinion on any written estimate – bring a competitor’s quote; we put our own number next to it in writing at no cost.
CleanRun has served homes across Leesburg and Loudoun County since 2013. The work in Lansdowne, in the Battlefield Parkway corridor, in the older neighborhoods near downtown Leesburg, and in the newer builds off Evergreen Mills Road all gets the same written scope, the same camera documentation, and the same 365-day backing. Fifty-two thousand homes served. Every one with a written price. Every one with a photo record when the crew left.
For a full overview of how supply duct cleaning fits into a complete system service, visit our home page or read through the complete scope of our Air Duct Cleaning in Leesburg service.
To schedule a supply duct cleaning or get a written price for your Leesburg home, call (571) 487-7204. A live person answers, and you’ll have a written number before anything else is discussed.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Leesburg, serving Leesburg.